Cyrus B. Comstock

Cyrus Ballou Comstock (3 February 1831-29 May 1910) was a Union Army Major-General during the American Civil War.

Biography
Cyrus Ballou Comstock was born in Wrentham, Massachusetts in 1831, and he graduated first in his class from West Point in 1855. He joined the US Army Corps of Engineers, and, during the American Civil War, he assisted in the fortification of Washinton DC. In 1862, he was transferred to the field and became chief engineer of the Army of the Potomac, also serving as chief engineer of the Army of the Tennessee at the 1863 Siege of Vicksburg. In November 1864, he became Ulysses S. Grant's senior aide-de-camp, and he became senior engineer for the 1865 assault on Fort Fisher, North Carolina and the assault on Mobile, Alabama. After the war, he took part in the trial of the conspirators in Abraham Lincoln's assassination, and he served as President of the Mississippi River Commission. He died in 1910.